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It is 30% better then gtx 760 and 35% slower then gtx770.
But I'm waiting for a review of the 780m inside the iMac. It could have little different clock's specs..
 
The 680MX in the late 2012 iMac was most comparable to a desktop 660Ti, so I imagine the 780M is right around that mark also, albeit with a 10-15% performance advantage over the 680MX.
 
I have been playing the BF4 beta at native res and it's surprisingly good (i7/780M.) Mostly ultra settings with HBAO (the one setting that makes the biggest difference to the appearance of the game) = ~40fps. HBAO off = 50fps. If you lowered the settings a bit/played at a lower res, you could easily get 60fps+.

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yes it is enough...probably same performance like 660TI

This is correct but the extra VRAM comes in VERY handy.
 
so i will can play battlefield 4 at native resolution+high settings in multiplayer and get +50fps?? i ordered 27" imac i5/780M
 
so after i read the article seems that 780M is close enough for a top desktop GPU, if we take away that ridiculous TITAN :D:D
 
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